The current Opel Insignia is 4,990 mm long, 1,863 mm wide and 1,506 mm tall, on a 2,829 mm wheelbase. It has grown 8 cm longer since the 2009 Insignia.
| Years | Length | Width | Height | Wheelbase | Boot capacity | Turning circle |
|---|---|---|---|---|---|---|
| 2009–2017 | 4,908 | 1,858 | 1,520 | 2,737 | 540 | 10.9 |
| 2017–2022Current | 4,990 | 1,863 | 1,506 | 2,829 | 532 | 11.1 |
Exterior figures are manufacturer specifications for the Insignia, averaged per generation across its variants and shown for the most common body style. Generations with the same size are merged. Boot capacity is the seats-up figure where the manufacturer quotes one.